[pure-silver] Re: Adding Pot Bromife to PC-TEA
- From: "Gene Johnson" <genej2@xxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 7 Jan 2005 11:08:54 -0800
I think what I really wanted to ask is if it reauired a change in
developing times, and if you've seen any change in characteristics. I'm
currently still using my PC-Kbr-Prestone stock and adding borax and sodium
carbonate to make working developer. Like it just fine, wondering if I
should try to go to the single step concentrate when it's gone :)
----- Original Message -----
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, January 07, 2005 10:50 AM
Subject: [pure-silver] Re: Adding Pot Bromife to PC-TEA
> I haven't had a chance yet to measure it.
>
> -----Original Message-----
> From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx]
> On Behalf Of Gene Johnson
> Sent: Friday, January 07, 2005 12:53 PM
> To: pure-silver@xxxxxxxxxxxxx
> Subject: [pure-silver] Re: Adding Pot Bromife to PC-TEA
>
>
> And you're now using 50/50?. How big of a ph change did that cause?
>
>
> ----- Original Message -----
> From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Friday, January 07, 2005 8:59 AM
> Subject: [pure-silver] Re: Adding Pot Bromife to PC-TEA
>
>
> > One of the reasons I started using a mixture of TEA and propylene
> > glycol
> for the
> > developer is that it allows me to control the amount of TEA and hence
> > the
> pH of
> > the working solution and still have a waterless concentrate. One can
> achieve a
> > lower pH than for Gainer's formula by adjusting the ratio of glycol to
> TEA.
> >
> > Many years ago there was a product (can't remember the name) to stop
> prints from
> > curling. You soaked the washed prints in a bath made by diluting this
> stuff and
> > then dried them. The product was based on one of the glycols.
> >
> > There is an OTC treatment for "swimmer's ear" which is 2% acetic acid
> > in glycerin. Works great to getting earwax out.
> >
> > -----Original Message-----
> > From: pure-silver-bounce@xxxxxxxxxxxxx
> [mailto:pure-silver-bounce@xxxxxxxxxxxxx]
> > On Behalf Of John Black
> > Sent: Friday, January 07, 2005 11:31 AM
> > To: pure-silver@xxxxxxxxxxxxx
> > Subject: [pure-silver] Re: Adding Pot Bromife to PC-TEA
> >
> >
> >
> >
> >
> > > I never measured the temperature. I will do that when I make
> > > another
> > batch
> > > (which may be awhile). I think Gainer stated in either his article
> > > in PhotoTechniques or in a post on the net that the ascorbic acid
> > > would
> > eventually
> > > go into solution without heating after a few days.
> > >
> >
> > I will try this and see how little heat is necessary for solubility of
> > the ascorbic acid. I would prefer one of the more fluid glycols over
> > methanol
> but
> > want to avoid the excess heat. I will let you know about the temp.
> >
> > BTW, since glycerol can be used (although in larger concentration) to
> prevent
> > curling in paper, I wonder if either of the glycols might have a good
> effect on
> > curling of paper of film? On second thought, the washing surely
> > removes
> it so
> > it probably doesn't.
> >
> > OT, propylene glycol is a great cerumenolytic (dissolves earwax) and
> > can
> be used
> > to good effect in cleaning out obstructed ears. Perhaps a good use
> > for
> outdated
> > HC110?
> >
> > JB
> >
> >
> >
> >
> >
>
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